Gas-demonstration apparatus.



PATENTED MAR. 19, 1907'. J. E. GARROLL. GAS DEMONSTRATION APPARATUS.

APPLIOATION PILED FEB.9.1907.

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UNTTED STATES i PATENT OFFICE.

*JOHN E. CARROLL, OF PHILADELPHIA, PENNSYLVANIA.

GAS-DEMONSTRATON APPARATUS.

Specification of Letters Patent.

Patented March 19,1907.

Application filed February 9, 1907. Serial No. 356.638.

To all whom 't may concern:

Be it known that I, JOHN E. OARROLL, a

i citizen of the United States, residing at Philadelphia, in the countyof Philadelphia and State of Pennsylvania, have invented a certain newand useful Gas-Demonstration Apparatus, of which the following is aspecification, reference being had therein to the accompanying drawing.

This invention relates to gas-`demonstration apparatus, the object ofthe present invention being to produce a pipe or Conduit for gas whichwill protect the gas passing therethrough from freezing by the exclusionof atmospherc temperature from the inside In the accompanying drawings,Figure 1 is a longitudnal section through a pipe or Conduit embodyingthe present invention. Fig. 2 is a cross-section through the same.

The Conduit contemplated in this invention comprises a pipe 1, of metal,which pipe may be of any desired size and gage or thickness and of anylength.

In carrying out the present invention the said pipe is provided with aninsulating- 40 lining 2 of fiber, which under the preferred' embodimentof this invention is vulcanized. For example, said fibrous linng may becomposed of paper-pulp made tough and Waterprooi' by treatment,including pressure.

The entire inside surface of the pi e 1 is protected by the fiber lining2, and t us acts as an armor to keep the outside atmospheric temperaturefrom reachng the center of the pipe or Conduit and causing the gaspassing,

therethrough to freeze.

In addition to the inside fiber lining the pipe 1 also has an outsidecovering or jacket 3 appled thereto, the said outer covering or jacketconsisting of the same or similar material and fitting closely aroundand lying in contact with the outer surface of said pi Such outercoverin is auxiliary or supp l mental to the inner ining.

The fiber lining and covering or jacket are o excellent non-conductorsof heat and cold and efiectively insulate the bore or central passage ofthe conduit, thus protectingthe gas in its passage through the same,prevent:

ing congealment of the atmospheric moisture upon the outside of theconduit.

I claim- A gas-Conduit embodying a pipe, a fibe lining therefor, and afiber covering or acket around the pipe, substantially as described.

In testimony whereof I afiix my signature in presence of two witnesses.

JOHN E. CARROLL. Witnesses:

EUGENE RAYMOND, Jr., CHAs. E. OELSCHLAGER.

